LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source

1 Features 1• 1.5-A High-Side Current Source for Single LED • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.5 A) • Accurate Programmable Flash LED Current from 93 mA to 1.5 A • Accurate Programmable Torch LED Currents: – 48.4 mA to 375 mA – 24 mA to 187 mA (LT

文件：530.01 Kbytes 页数：30 Pages

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德州仪器

LM3642 1.5A Synchronous Boost LED Flash Driver with High-Side Current Source

文件：920.77 Kbytes 页数：26 Pages

TI

德州仪器

具有高侧电流的 1.5A 同步升压 LED 闪光灯驱动器

LM3642 是一款适用于高电流白色 LED 的 4MHz 固定频率同步升压转换器及 1.5A 恒流驱动器。高侧电流源支持 LED 阴极接地操作，提供的闪光灯电流最高可达 1.5A。自适应调节方法可确保电流源持续处于可调节状态，并且实现了效率最大化。LM3642 由一个兼容 I2C 的接口控制。相关特性 包括硬件闪光使能 (STROBE)，允许通过逻辑输入触发闪光灯脉冲，其 TX 输入可强制闪光灯脉冲进入低电流手电筒模式，支持与 RF 功率放大器事件或其他高电流条件实现同步。 该器件的开关频率为 4MHz，具备过压保护和可调节限流设置，因此可采用微型超薄电感和 10μF 陶瓷电容。该器件采用 • 适用于单 LED 的 1.5A 高侧电流源\n• 93mA 至 1.5A 精确可编程闪光灯 LED 电流\n• 48.4mA 至 375mA \n• 小型解决方案尺寸：2\n• 硬件选通脉冲使能\n• VIN 闪光灯监视器优化\n• 0.5mm 间距，9 凸点芯片尺寸球状引脚栅格阵列 (DSBGA) 封装;

TI

德州仪器

LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source

1 Features 1• 1.5-A High-Side Current Source for Single LED • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.5 A) • Accurate Programmable Flash LED Current from 93 mA to 1.5 A • Accurate Programmable Torch LED Currents: – 48.4 mA to 375 mA – 24 mA to 187 mA (LT

文件：530.01 Kbytes 页数：30 Pages

TI

德州仪器

LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source

1 Features 1• 1.5-A High-Side Current Source for Single LED • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.5 A) • Accurate Programmable Flash LED Current from 93 mA to 1.5 A • Accurate Programmable Torch LED Currents: – 48.4 mA to 375 mA – 24 mA to 187 mA (LT

文件：530.01 Kbytes 页数：30 Pages

TI

德州仪器

LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source

1 Features 1• 1.5-A High-Side Current Source for Single LED • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.5 A) • Accurate Programmable Flash LED Current from 93 mA to 1.5 A • Accurate Programmable Torch LED Currents: – 48.4 mA to 375 mA – 24 mA to 187 mA (LT

文件：530.01 Kbytes 页数：30 Pages

TI

德州仪器

LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source

1 Features 1• 1.5-A High-Side Current Source for Single LED • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.5 A) • Accurate Programmable Flash LED Current from 93 mA to 1.5 A • Accurate Programmable Torch LED Currents: – 48.4 mA to 375 mA – 24 mA to 187 mA (LT

文件：530.01 Kbytes 页数：30 Pages

TI

德州仪器

LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source

1 Features 1• 1.5-A High-Side Current Source for Single LED • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.5 A) • Accurate Programmable Flash LED Current from 93 mA to 1.5 A • Accurate Programmable Torch LED Currents: – 48.4 mA to 375 mA – 24 mA to 187 mA (LT

文件：530.01 Kbytes 页数：30 Pages

TI

德州仪器

LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source

1 Features 1• 1.5-A High-Side Current Source for Single LED • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.5 A) • Accurate Programmable Flash LED Current from 93 mA to 1.5 A • Accurate Programmable Torch LED Currents: – 48.4 mA to 375 mA – 24 mA to 187 mA (LT

文件：530.01 Kbytes 页数：30 Pages

TI

德州仪器

LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source

1 Features 1• 1.5-A High-Side Current Source for Single LED • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.5 A) • Accurate Programmable Flash LED Current from 93 mA to 1.5 A • Accurate Programmable Torch LED Currents: – 48.4 mA to 375 mA – 24 mA to 187 mA (LT

文件：530.01 Kbytes 页数：30 Pages

TI

德州仪器